Python 3.12 does not provide the imp module, so just add a version placeholder
that can be substituted in the template.

--- ./setup.py.orig	2023-09-29 10:39:49.179745785 -0400
+++ ./setup.py	2023-09-29 10:40:17.005916409 -0400
@@ -5,7 +5,7 @@
 
 PROJ_METADATA = '%s.json' % PROJ_NAME
 
-import os, json, imp
+import os, json
 here = os.path.abspath(os.path.dirname(__file__))
 proj_info = json.loads(open(os.path.join(here, PROJ_METADATA), encoding='utf-8').read())
 try:
@@ -13,7 +13,7 @@
 except:
     README = ""
 CHANGELOG = open(os.path.join(here, 'CHANGELOG.rst'), encoding='utf-8').read()
-VERSION = imp.load_source('version', os.path.join(here, 'src/%s/version.py' % PACKAGE_NAME)).__version__
+VERSION = '@@VERSION@@'
 
 from setuptools import setup, find_packages
 setup(